CS42526-CQZ Equivalent & Substitute Parts

Part Overview

The CS42526-CQZ is a general purpose audio interface IC manufactured by Cirrus Logic Inc., featuring S/PDIF receiver capability with 24-bit serial data interface in a 64-LQFP surface mount package. This device integrates 2 ADCs and 6 DACs with 114 dB dynamic range on both channels, supporting analog and digital supply voltages across 4.75V to 5.25V ranges. The CS42526-CQZ is classified as obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and system maintenance.

Substiute Parts

CS42526-CQZ

Cirrus Logic Inc.In Stock: 1870CS42526-CQZ Datasheet

Current PartRFQ

CS42526K-CQZ

Cirrus Logic Inc.In Stock: 1418CS42526K-CQZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS42526-CQZ is determined by strict alignment of the following critical parameters:

• Package / Case: 64-LQFP (10x10) surface mount configuration
• Data Interface: Serial protocol compatibility
• Resolution: 24-bit data width
• Dynamic Range: 114 dB specification on both ADC and DAC channels
• Supply Voltage Ranges: Analog 4.75V ~ 5.25V and Digital 3.13V ~ 5.25V
• Operating Temperature: -10°C ~ 70°C range
• RoHS and MSL Compliance: ROHS3 Compliant, MSL 3 (168 Hours)

The CS42526K-CQZ qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. While the ADC/DAC channel configuration differs (6 ADCs / 2 DACs versus 2 ADCs / 6 DACs), both devices maintain identical package geometry, serial interface protocol, 24-bit resolution, 114 dB dynamic range specification, supply voltage ranges, and compliance certifications. The CS42526K-CQZ carries active product status, ensuring ongoing availability and support.

Parameter Comparison

Engineering Selection Recommendations

The CS42526K-CQZ is the qualified substitute for the obsolete CS42526-CQZ. Both devices maintain identical electrical specifications for supply voltage ranges, dynamic range performance, resolution, and operating temperature. Both are ROHS3 compliant with matching MSL ratings of 3 (168 Hours), ensuring equivalent environmental and regulatory compliance. The CS42526K-CQZ carries active product status, providing assured component availability and manufacturer support for ongoing production requirements. The 64-LQFP (10x10) package geometry and serial data interface are identical, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the CS42526K-CQZ replace the CS42526-CQZ in existing designs?

A: Yes. Both devices share identical package geometry (64-LQFP 10x10), supply voltage specifications (4.75V ~ 5.25V analog, 3.13V ~ 5.25V digital), serial data interface protocol, 24-bit resolution, and 114 dB dynamic range. PCB layout and electrical connections remain compatible without modification.

Q: What is the difference between the ADC/DAC channel configurations?

A: The CS42526-CQZ provides 2 ADCs and 6 DACs, while the CS42526K-CQZ provides 6 ADCs and 2 DACs. This difference reflects different functional implementations within the same package and electrical interface specification. Design integration must account for the specific channel configuration required by the application.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the CS42526-CQZ and CS42526K-CQZ are ROHS3 compliant and carry identical MSL ratings of 3 (168 Hours), meeting current environmental and moisture sensitivity requirements.

Q: Why is the CS42526-CQZ classified as obsolete?

A: The CS42526-CQZ has reached end-of-life status with Cirrus Logic Inc. The CS42526K-CQZ remains in active production, providing a direct substitute path for new designs and component replenishment.

Q: Are there any thermal or operating condition differences?

A: No. Both devices operate across the identical temperature range of -10°C to 70°C with matching dynamic range and supply voltage specifications.